It's impossible to prove a negative. In other words, one can't actually find Bigfoot to prove that he's not real; therefore, Bigfoot might be real because we just haven't found him yet. This is similar to how global warming skeptics argue their case.

This United States of Monsters infographic notes the monster that wreaks the most havoc in every state, and it could save your life. From the Jersey Devil to Bigfoot, America's crawling with cryptozoological beasts. Some are harmless, while others seek to maim, dismember and destroy.

If the science is not there, it's not there. It gets you nothing but discredited to make stuff up. For those who willfully ignore all the plausible answers and instead hype the outrageous one, you are poisoning your own field.

Have you had a mermaid sighting? Some believe they are as real as fairies, or saints, or ghosts. The recent news from NOAA that mermaids are, in fact, a myth resulted in a flurry of media coverage and everything from mockery of the government to broken-hearted little girls.